medical MCQs – Page 244

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

4861. The normal brown red color of feces results from the presence of_______________?
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A. Heme

B. Bilirubin diglucuronide

C. Biliverdin

D. Stercobilin

4862. The neuromuscular transmitter released at neuromuscular junction is_______________?
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A. Acetylcholine

B. Epinephrine

C. Dopamine

D. Nor epinephrine

4863. The hyperosmolarity of the renal medulla is due to increased content of_____________?
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A. Glucose

B. NH4+

C. K+

D. Na+

4864. The eosinophil count in the peripheral blood smear is increased in________________?
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A. Allergic conditions

B. Anemia

C. Typhoid fever

D. Polycythemia

4865. Normal adult persons blood contains_____________?
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A. 20% eosinophils

B. 10% basophils

C. 40% neutrophils

D. 30% lymphocytes

4866. Carotid body function in an organ work as_______________?
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A. Differential pressure of oxygen in arterial blood

B. Differential pressure of oxygen in in hemoglobin synthesis

C. Differential pressure of oxygen in venous blood

D. Differential pressure of oxygen in in tissue fluids

4867. Upstroke of action potential would lead to________________?
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A. None of the above

B. Net current in an outward direction

C. Cell interior becomes less negative

D. Cell interior becomes more negative

4868. Non- respiratory function of the lung is_________________?
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A. Serotonin metabolism

B. Dopamine metabolism

C. Adrenaline metabolism

D. PGE2 production

4869. Shift of the oxygen dissociation curve to right is caused by the following factors EXCEPT_______________?
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A. Increased concentration of carbon di oxide

B. Increased concentration of oxygen

C. Increased temperature

D. Increased 2,3 BPG

4870. Albumin is_____________?
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A. Nucleo protein

B. Phospho protein

C. Chromo protein

D. Simple protein

4871. Non true regarding Na/K pump is______________?
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A. Hypocalcemia inhibits the pump

B. Increase in intracellular Na

C. 5 Na+ exchanged for 2K+

D. Pumps Na against a gradient

4872. Which of the following is one for a patient on coumarin (warfarin) therapy_______________?
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A. Capillary fragility test (CFT)

B. Partial thromboplastin time ( PTT)

C. Bleeding time (BT)

D. Prothrombin time (PT)

4873. Lymphocytes are located in each of the following tissues or organs EXCEPT one. The one exception is______________?
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A. Lymph nodes

B. Thymus gland

C. Brain

D. Spleen

4874. Lysis of RBCs are seen in all of the following except__________?
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A. Methotrexate therapy

B. Thalassemia

C. Obstructive jaundice

D. Sickle cell anemia

4875. CO2 is carried in the blood________________?
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A. In combination with hemoglobin

B. All of the above

C. In physical solution in plasma

D. In combination with plasma proteins

4876. Ammonia in the kidney tubules is excreted in exchange for______________?
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A. PO4-2

B. Na+

C. CL-

D. HCO3-

4877. Macula dense in kidney is located in relation to______________?
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A. Efferent arteriole

B. PCT

C. DCT

D. Afferent arteriole

4878. Increase in threshold level on applying subthreshold, slowly rising stimulus is known as ___________?
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A. Refractoriness

B. Electrotonus

C. Adaptation

D. Accommodation

4879. Survival time of platelet is approximately______________?
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A. 10 weeks

B. 10 days

C. 10 hours

D. 100 days

4880. The processing of short-term memory to long term memory is done in_______________?
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A. Amygdala

B. Neocortex

C. Prefrontal cortex

D. Hippocampus

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